
I'm crap for drawing, but we have a slide the sits below the key pins and has beveled front end so when it comes back it pushes them back into the bible. There is a spring at the end of the plug and the right way to move the slide is to push the bottom of the the keyway end to allow the key pins to drop through the holes in the slide. Just an idea. Also the pin on the left have a horse she driver pin and a key pint that comes to a point can even spool the horse shoe, but the key pin fits inside the horeshoe. Just some napking drawings I was doing during a meeting.